Comparative genomic hybridization (array CGH) analysis of choroid plexus papilloma DNA arrays by de León et al. reveals amplification of SPNS2, GGT6, SMTNL2, PELP1, MYBBP1A, and ALOX15 genes in chromosome 17p [66]. The gene discussed is SMTNL2; the disease is choroid plexus papilloma.